<template>
 <view >
  <my-search></my-search>

	<view class="scroll-view-container">
    <scroll-view class="scroll-left-view" scroll-y="true" :style="{height:wh+'px'}">
      <block v-for="(item,i) in cateList" :key="i">
        <view :class="['left-scroll-view-item',i===active? 'active':'' ]" @click="activeChanged(i)">{{item.cat_name}}</view>
      </block>
      
    </scroll-view>
    
    <scroll-view class="scroll-right-item" scroll-y="true" :style="{height:wh+'px'}" :scroll-top="scrollTop">
      <!-- 二级分类 -->
      <view class="cate-lev2" v-for="(item2,i2) in cateLevel2">
        <view class="cate-lev2-title">/{{item2.cat_name}}/</view>
        <!-- 三级分类 -->
        <view class="cate-lev3-list" >
          <view class="cate-lev3-item" v-for="(item3,i3) in item2.children " @click="goToGoodsList(item3)">
            <image :src="item3.cat_icon" ></image>
            <text>{{item3.cat_name}}</text>
          </view>
        </view>
      </view>
    
      
    </scroll-view>
	</view>
  
  </view>
</template>

<script>
	import badgeMi from '@/mixins/tabbar-badge.js'
	export default {
	  mixins:[badgeMi],
		data() {
			return {
				wh:0,
        cateList:[],
        active:0,
        cateLevel2:[],
        scrollTop:0
			};
		},
    onLoad() {
     const winInfo= uni.getWindowInfo()
     this.wh=winInfo.windowHeight-45
     this.getCateList()
    },
    methods:{
      //获取分类数据
     async getCateList(){
      const{data:res} =await uni.$http.get("/api/public/v1/categories")
      if(res.meta.status!==200) return uni.$showMsg()
      this.cateList=res.message
      this.cateLevel2=this.cateList[0].children
      },
      activeChanged(i){
        this.active=i
        this.cateLevel2=this.cateList[i].children
        this.scrollTop=this.scrollTop?0:1
      },
      goToGoodsList(item){
        uni.navigateTo({
          url:'/subpkg/goods-list/goods-list?cid='+item.cat_id
        })
      }
      
    }
    
    
	}
</script>

<style lang="scss">
.scroll-view-container{
  display: flex;
}
.scroll-left-view{
  width: 120px;
}
.left-scroll-view-item{
  background-color: #f7f7f7;
  text-align: center;
  line-height: 60px;
  font-size: 12px;
  &.active{
    background-color: #ffffff;
    position: relative;
    &::before{
      content:' ';
      display: block;
      width: 3px;
      height: 40px;
      background-color: #C00000;
      position: absolute;
      top: 50%;
      left: 0;
      transform: translateY(-50%);
    }
  }
}
.cate-lev2-title{
  font-size: 12px;
  font-weight: bold;
  padding: 15px 0;
  text-align: center;
}
.cate-lev3-list{
    display: flex;
    flex-wrap: wrap;
    .cate-lev3-item{
      width: 33.3%;
      display: flex;
      flex-direction: column;
      justify-content: center;
      align-items: center;
      margin-bottom: 10px;
    }
    image{
      width: 60px;
      height: 60px;
    }
    text{
      font-size: 12px;
    }
    
}
</style>
